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Add A New Virtual Disk Using Xen Center
First you need to add a virtual disk using Xen Center. Click on the virtual machine, then the Storage tab, then click the Add button at the bottom.
Next, enter the size of the virtual disk & choose the storage repository where it will...

Many applications cache DNS entries to speed up DNS lookups in the event you request resources from the same server. Sometimes you need to flush this DNS cache if you know for a fact that a DNS entry has changed. How do you do that?
Flushing DNS On Windows
H:\>ipconfig /flushdns
Windows IP...

To mount a Windows file share on Linux, first create the file share on Windows and give the appropriate permissions to the user. Then, on Linux you want to do the following:
Create a directory for the mount point
mkdir -p /mnt/windows/backups
Use the mount command to mount the Windows share:
mount -t cifs //yourwindowsserver/backups...

Sometimes on Linux, you want to automatically login to a machine using ssh without being prompted for a password. How do you set this up?
First you need to generate a public/private key pair on the server you will be connecting from, lets call it
SERVERFROM
ssh-keygen -t rsa
You could also use -t...

If you access http://blog.vinteros.com from an iPhone or iPod Touch, you will see a nice new mobile them courtesy of http://www.bravenewcode.com/wptouch/ Here's a screenshot:
[caption id="attachment_82" align="aligncenter" width="320" caption="Vinteros Blog For iPhone Theme"][/caption]...

In Postgres Plus Advanced Server 8.3R2, there are times when you want to query a table using values passed in as XML. Here's an example. First we'll create a table and insert a few values:
CREATE TABLE NAMES (FNAME VARCHAR2(50));
Table created.
INSERT INTO NAMES VALUES ('MIKE');
1 row INSERTED.
INSERT INTO NAMES VALUES...

Sometimes you need to disable the firewall in Linux from the command line. A good example is when you create a Xen virtual machine & configure VNC access. By default, the VM will boot up in init level 3 which is text mode and doesn't have a graphical desktop. After...

If you create a lot of virtual machines using the Citrix XenCenter, you'll want to create an installation repository somewhere containing the installation software. You need an http server & the installation .iso file for your particular version of Linux. Here's how to create an http repository for Redhat 5.3...